How do i find the slope to (10, 4), (4, 15)

Ineed with number 17 i don’t get it at alll

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth